Cattle and deforestation: it's complicated

Looking at a map of global cattle distribution (below) might lead you to assume that beef is a major deforestation driver on every continent. This isn't the case for two reasons. First, not all domestic cattle are raised for beef; in many parts of the world, such as India—home to the world's largest cattle population—most cattle are used for dairy or as work animals. Cattle raised for these uses play little role in deforestation.

And in much of the world, beef cattle are raised in regions that are not heavily forested, such as the savannas of sub-Saharan Africa or the high plains of North America. In these places, beef is a major product but not a major deforestation driver. (This does not mean that beef produced in these regions has no global warming impact: the digestive systems of cattle emit large amounts of methane and nitrous oxide—powerful global warming pollutants—no matter what kind of land they occupy. And beef producers may import feed, such as soybeans, from countries where that feed is a deforestation driver—so it's possible for beef to drive deforestation indirectly even in countries where it does not do so directly.)

Most of the deforestation impact of current beef production is concentrated in Latin America:

Though cattle production is distributed widely around the globe, its deforestation impact has been particularly high in South America, with Brazil, Paraguay, Argentina and Bolivia all experiencing high levels of cattle-driven deforestation. Source: Map made with the Livestock Geo-Wiki, using data from Robinson et al. 2014.

Produced globally, consumed locally

Beef differs from other major deforestation drivers in one important respect: it is most often eaten in the same country that produced it. There are exceptions, such as Paraguay, which became a major beef producer only recently and exports the majority of its beef. But in most beef-producing countries, a high percentage of domestically produced beef is also consumed domestically.

The world average for beef consumption is 6.6 kilograms (about 15 pounds) per person per year. But in the largest beef-consuming countries, such as the United States and Brazil, the average is about four times that much, or roughly a pound per person per week.

Big carbon bang, small nutritional buck

In most existing systems, beef is a highly inefficient way to convert the sun's energy into food. This is true even compared to other animal products such as pork, poultry and dairy, and far more so compared to plant foods. While beef can be produced in well-managed grasslands and rangelands with greater efficiency, and with benefits including soil carbon sequestration, such systems remain rare.

This nutritional inefficiency magnifies the high carbon footprint of typical beef production. On a per-calorie basis, beef produced in tropical regions is responsible for nearly 200 times as much global warming emissions as soy, and over 60 times as much as palm oil:

The outsized deforestation impact of beef produced in the tropics looks even bigger on a per-calorie basis. Source: Persson et al. 2014, Figure 3a

Reducing beef-driven deforestation

Can beef's outsized deforestation impact be reduced?

Low stocking rates in Latin America have led to the idea that intensification of beef production—higher densities, improved pastures, perhaps supplemental feeds—might have a positive effect. But this is not as straightforward a solution as it seems. Land in the Amazon is more valuable after it has been cleared, so cattle are often used to claim ownership of land before it is sold for profit rather than for the purpose of raising cattle. Ranchers who are more focused on land speculation than beef production might not see much benefit to reducing their land use through intensification. Therefore, reducing demand for beef produced in these areas may need to be combined with additional measures that reduce other drivers of deforestation in order to be effective.

It's also possible to reduce the overall global warming impact of beef through best management practices for pasture and rangelands, which promote soil carbon sequestration and provide other environmental and socioeconomic benefits. Such systems are currently very rare, and encouraging their wider adoption could help to offset beef's role as a deforestation driver.

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